22620220 has 24 divisors (see below), whose sum is σ = 54288864. Its totient is φ = 7755456.

The previous prime is 22620211. The next prime is 22620223. The reversal of 22620220 is 2202622.

It is a junction number, because it is equal to n+sod(n) for n = 22620194 and 22620203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22620223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80647 + ... + 80926.

It is an arithmetic number, because the mean of its divisors is an integer number (2262036).

Almost surely, 2^22620220 is an apocalyptic number.

22620220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22620220 is an abundant number, since it is smaller than the sum of its proper divisors (31668644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22620220 is a wasteful number, since it uses less digits than its factorization.

22620220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161589 (or 161587 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22620220 is about 4756.0719086238. The cubic root of 22620220 is about 282.8127218032.

Adding to 22620220 its reverse (2202622), we get a palindrome (24822842).

The spelling of 22620220 in words is "twenty-two million, six hundred twenty thousand, two hundred twenty".